var calculateSub = (data1, data2) => {
	if(data1 && data2){
		var r1,r2,m,n;
		var data1_temp = data1.toString().split("."), data2_temp = data2.toString().split(".");

	 	r1=data1_temp && data1_temp[1] && data1_temp[1].length ? data1_temp[1].length : 0;
	 	r2=data2_temp && data2_temp[1] && data2_temp[1].length ? data2_temp[1].length : 0;
	 	m=Math.pow(10,Math.max(r1,r2)); 
	 	n=(r1>=r2)?r1:r2; 
	 	var res_temp = (data1*m-data2*m)/m;
	 	return res_temp.toFixed(n);
	}else{
		return '';
	}
}
var encodeUTF8 = s => {
  var i, r = [], c, x;
  for (i = 0; i < s.length; i++)
    if ((c = s.charCodeAt(i)) < 0x80) r.push(c);
    else if (c < 0x800) r.push(0xC0 + (c >> 6 & 0x1F), 0x80 + (c & 0x3F));
    else {
      if ((x = c ^ 0xD800) >> 10 == 0) //对四字节UTF-16转换为Unicode
        c = (x << 10) + (s.charCodeAt(++i) ^ 0xDC00) + 0x10000,
          r.push(0xF0 + (c >> 18 & 0x7), 0x80 + (c >> 12 & 0x3F));
      else r.push(0xE0 + (c >> 12 & 0xF));
      r.push(0x80 + (c >> 6 & 0x3F), 0x80 + (c & 0x3F));
    };
  return r;
}
var getArrVal = (arr, key, key_value, flag_key) => {
	if(arr && arr.length){
		for(var index=0; index<arr.length; index++){
			if(arr[index][key] == key_value){
				return arr[index][flag_key];
			}
		}
	}else{
		return '';
	}
}
var aldate = date_time => {
  var date_time = date_time ? new Date(date_time) : new Date();
  var t_year = date_time.getFullYear();
    var t_month = date_time.getMonth()+1;
    var t_day = date_time.getDate();
    var t_hour = date_time.getHours();
    var t_minutes = date_time.getMinutes();
    var t_seconds = date_time.getSeconds();
    return `${t_year}-${t_month<10?'0'+t_month:t_month}-${t_day<10?'0'+t_day:t_day} ${t_hour<10?'0'+t_hour:t_hour}:${t_minutes<10?'0'+t_minutes:t_minutes}:${t_seconds<10?'0'+t_seconds:t_seconds}`;
}
var mySha = (s) => {
	var data = new Uint8Array(encodeUTF8(s))
  var i, j, t;
  var l = ((data.length + 8) >>> 6 << 4) + 16, s = new Uint8Array(l << 2);
  s.set(new Uint8Array(data.buffer)), s = new Uint32Array(s.buffer);
  for (t = new DataView(s.buffer), i = 0; i < l; i++)s[i] = t.getUint32(i << 2);
  s[data.length >> 2] |= 0x80 << (24 - (data.length & 3) * 8);
  s[l - 1] = data.length << 3;
  var w = [], f = [
    function () { return m[1] & m[2] | ~m[1] & m[3]; },
    function () { return m[1] ^ m[2] ^ m[3]; },
    function () { return m[1] & m[2] | m[1] & m[3] | m[2] & m[3]; },
    function () { return m[1] ^ m[2] ^ m[3]; }
  ], rol = function (n, c) { return n << c | n >>> (32 - c); },
    k = [1518500249, 1859775393, -1894007588, -899497514],
    m = [1732584193, -271733879, null, null, -1009589776];
  m[2] = ~m[0], m[3] = ~m[1];
  for (i = 0; i < s.length; i += 16) {
    var o = m.slice(0);
    for (j = 0; j < 80; j++)
      w[j] = j < 16 ? s[i + j] : rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1),
        t = rol(m[0], 5) + f[j / 20 | 0]() + m[4] + w[j] + k[j / 20 | 0] | 0,
        m[1] = rol(m[1], 30), m.pop(), m.unshift(t);
    for (j = 0; j < 5; j++)m[j] = m[j] + o[j] | 0;
  };
  t = new DataView(new Uint32Array(m).buffer);
  for (var i = 0; i < 5; i++)m[i] = t.getUint32(i << 2);

  var hex = Array.prototype.map.call(new Uint8Array(new Uint32Array(m).buffer), function (e) {
    return (e < 16 ? "0" : "") + e.toString(16);
  }).join("");

  return hex;
}

export { calculateSub, getArrVal, mySha, aldate }